Re: [asterisk-users] Channels freeze on Confbridge

[Carlos Chavez]

On 25/08/20 7:20, Andrew Yager wrote:

On Sun, 23 Aug 2020 at 18:23, Antony Stone 
> wrote:


On Saturday 22 August 2020 at 22:51:48, Sebastian Nielsen wrote:

> I had a similiar problem, but with calls dropping after 30 sec.
> It turned out that Android didn't support RP-CID (Reverse Party
Caller ID)
> so when I sent the name of the callee to the caller (as some sort of
> "centralized phonebook function") it caused calls to be dropped
as android
> refused to reply on the packets or sent rejections back.

I can see the point you're making here, but what's going to do
this after 30
*minutes* of normal call?


Have seen plenty of ALGs do weird things like this. 30 minutes is a 
nice number, and nice enough that I'd go hunting for ALG issues. It's 
a good multiple of 3 minutes, and quite possibly is some big number 
someone thought to set in something that "no one would ever hit".


A tcpdump would probably show you what's going on if the logs are 
otherwise unclear, and you could also make sure you have sensible RTP 
timeout rules.


Andrew


    We are zeroing in on something with the SIP trunk provider.  We 
have are testing a new carrier and so far we have not seen the same problem.


--
Telecomunicaciones Abiertas de México S.A. de C.V.
Carlos Chávez
+52 (55)8116-9161

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Re: [asterisk-users] Channels freeze on Confbridge

[Andrew Yager]

On Sun, 23 Aug 2020 at 18:23, Antony Stone <
antony.st...@asterisk.open.source.it> wrote:

> On Saturday 22 August 2020 at 22:51:48, Sebastian Nielsen wrote:
>
> > I had a similiar problem, but with calls dropping after 30 sec.
> > It turned out that Android didn't support RP-CID (Reverse Party Caller
> ID)
> > so when I sent the name of the callee to the caller (as some sort of
> > "centralized phonebook function") it caused calls to be dropped as
> android
> > refused to reply on the packets or sent rejections back.
>
> I can see the point you're making here, but what's going to do this after
> 30
> *minutes* of normal call?
>

Have seen plenty of ALGs do weird things like this. 30 minutes is a nice
number, and nice enough that I'd go hunting for ALG issues. It's a good
multiple of 3 minutes, and quite possibly is some big number someone
thought to set in something that "no one would ever hit".

A tcpdump would probably show you what's going on if the logs are otherwise
unclear, and you could also make sure you have sensible RTP timeout rules.

Andrew
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